Public tool
Calorie calculator
Estimate basal metabolic rate and maintenance calories with the Mifflin–St Jeor formula. The calculation runs only in this browser.
Calculation details
Formula and limits
BMR: 10 × weight (kg) + 6.25 × height (cm) − 5 × age + coefficient, where the coefficient is −161 or +5. Maintenance is BMR multiplied by the selected activity factor. Values are rounded to whole kcal.
This tool is for adults only. It does not account for health conditions, pregnancy, breastfeeding, eating disorders, or conditions and medicines that can affect weight.
Frequently asked questions
What is BMR?
It is an estimated amount of energy the body uses at rest. It is not a personal nutrition target.
What if I do not want to specify a coefficient?
Select “Prefer not to say” to see a range using both formula coefficients.
Is my information saved?
No. The fields are used only for this calculation and are not sent to a server.
Important
This result is for information only, does not replace medical care, and is not intended for people under 18, during pregnancy or breastfeeding, with eating disorders, health conditions, or medicines that affect weight.